The compact diameter of these mufflers make them great for both classic and late model cars with ground clearance issues. Sound is attenuated with the Borla patented Multicore design and high-temperature continuous-filament fiber (CFF) acoustic material, without losing any horsepower or torque. 100% welded construction for strength. Built with T-304 stainless steel they have unequaled durability and great looks that you can polish to a mirror like finish if desired. Best of all, it's made in the USA. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.

Borla XR-1 Multicore Muffler 401383

Specifications:

Inlet/Outlet Configuration	Center/Center
Notch	N
Title Extended	Low profile Multicore Muffler 2.5in Center in/out 4in Round x 14in case 19in Overall Length. Non directional. Part # 401383
Title	XR-1 Multi-Core Racing Muffler 2.5in Center Inlet/ 2.5in Center Outlet 4in Round x 14in Long Body
Grade Type	Performance
Description_SHO	XR-1 Multi-Core
Description_INV	BorlaXR-1 Multi-Core Muffler
Description_DEF	Exhaust Muffler
Description_DES	XR-1 Multicore Muffler
Description_ASM	XR-1 Multi-Core Muffler Racing Muffler - 2.5" Center Inlet/ 2.5" Center Outlet 4" Round x 14" Long Body 19" Overall Length. Universal Part. Reversible Design.
Description_EXT	XR-1 Multi-Core Muffler Racing Muffler - 2.5" Center Inlet/ 2.5" Center Outlet 4" Round x 14" Long Body 19" Overall Length. Universal Part. Reversible Design.
Description_MKT	The compact diameter of these mufflers make them great for both classic and late model cars with ground clearance issues. Sound is attenuated with the Borla patented Multicore design and high-temperature continuous-filament fiber (CFF) acoustic material, without losing any horsepower or torque. 100% welded construction for strength. Built with T-304 stainless steel they have unequaled durability and great looks that you can polish to a mirror like finish if desired. Best of all, it's made in the USA. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.